飞机薄壁零件装配偏差建模与仿真分析

为了准确有效地实现飞机薄壁零件装配偏差预测与控制,提出一种飞机薄壁零件装配偏差建模与仿真分析方法。根据飞机薄壁零件装配工艺过程,考虑零件制造偏差、工装夹具偏差和装配变形,基于确定性定位法和影响系数法建立装配偏差模型。在此基础上,基于蒙特卡洛法对装配偏差模型进行仿真求解,根据偏差源敏感度进行装配偏差优化。以某型飞机机身壁板装配偏差分析为例,验证了所提方法的有效性。

Modeling and Simulation Analysis of Aircraft Thin-walled Parts Assembly Deviation

In order to accurately and effectively predict and control the deviation of aircraft thin-walled parts assembly,an assembly deviation modeling and simulation analysis method for aircraft thin-walled parts was proposed.According to the assembly process of aircraft thin-walled parts,an assembly deviation model based on deterministic locating method and influence coefficient method was established.In the assembly deviation model,the effects of part manufacturing variations,tooling fixture deviations and assembly deformation were considered.The Monte Carlo method was utilized to simulate the assembly deviation model,and the assembly deviation was optimized according to the deviation source sensitivity.Taking the assembly deviation analysis of the fuselage wall panel assembly of a certain aircraft as example,the validity of the proposed method was verified.